Have a question on communicating between 2-3 RPis. Trying to build a remote Web Cam where one or two pi zeros are taking the pics every 30 mins (only pics, no streaming due to 4G bandwidth and cost). They are housed in fake camera housing to protect them from the weather. I would like to have these Pi Zeros send the pics taken back to a Pi4 that would process the pics (date time temp stamp and resize resolution) and then upload them to the WWW. The deployment is far in the back country, but with 4G available. Solar power is required. I have the process working using a solo Pi4 and 1 pi camera attached, but I would like to have 2-3 cameras working at the same location (pointing different directions), but to reduce 4G costs use 1 modem with the Pi4. The Pi Zero cameras would be about 10-15 ft away from the Pi4. My thinking was to have the power come from the main power (12v battery) through a Cat 6 cable, and then possibly communicate via UART with the other not used wires. The main unit (Pi4 and 12v battery) is in an insulated box with metal siding for weather protection. Since a power cable is required to run to the Pi Zeros, does it make sense to to communicate via the other wires? (vs wifi or bluetooth or ethernet). Looking for suggestions as to easiest way to communicate. And if UART is recommended, possible link to how to do this. Low power consumption is critical as will be operational in winter too when less solar power generated. Have considered using ethernet and POE, but that would then require a switch and more power consumption and possible upgrade to Pi3 from Pi Zero. The only required communication between the RPi's would be PiZ -> Pi4 image taken. But would be nice to have the option for the Pi4 to say take a pic now too (ie limited 2 way communication).
I also currently VNC into the Pi4 for code upgrades and troubleshooting. Is there a way to VNC into the PiZero's if connected by UART?
Many thanks in advance.
I also currently VNC into the Pi4 for code upgrades and troubleshooting. Is there a way to VNC into the PiZero's if connected by UART?
Many thanks in advance.
Statistics: Posted by krm240 — Wed Jul 31, 2024 4:38 pm